2013 BMW 750Li Is Leaking Oil

Discovering the Causes of Oil Leaks in Your 2013 BMW 750Li and How to Address Them Effectively

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Reviewed by
Devin Cabugcal
Written by RepairPal Car Genius
Updated January 14, 2025
0%
80% chance it's the
Oil System Components
0%
20% chance it's the
Engine Gaskets
The most common reasons a 2013 BMW 750Li is leaking oil are oil system component failure and leaking engine gaskets.
  • Oil System Components: A failure in oil system components, such as a worn oil pump or clogged oil filter, can lead to inadequate lubrication and potential engine damage.
  • Engine Gaskets: A worn or damaged engine gasket can lead to oil or coolant leaks, resulting in engine overheating or loss of lubrication.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

How much does it cost to fix a 2013 BMW 750Li is leaking oil?

Common Repairs

The total repair cost will vary based on the condition of your vehicle and the number of repairs needed to fix your symptom. Proper diagnosis will save you money by finding the exact repairs needed to fix your car right the first time.

Oil pans don't wear out or break like other parts, they generally only need to be replaced because of external damage from an accident or an improperly tightened drain plug. The main symptom you will experience is an oil leak underneath the engine of your car. The oil that leaks from a damaged oil pan will range from dark brown to dark black. If the leak is large enough or occurs for long enough the oil level will be low enough to turn the oil pressure or low oil level warning light on.

An oil leak may be noted on the ground where the vehicle is parked. However, many vehicles have plastic trays underneath the engine that may catch leaking oil and conceal the leak. In such cases, a low oil level, a burning oil smell, or even smoke from oil burning in the engine bay may be noted.

»MORE: Signs of a bad oil pan gasket

A bad oil level sensor may cause a false reading of the engine oil level. The oil level warning light may illuminate even when the oil level (checked manually) is within an acceptable range. The warning light may also come on and off intermittently if the sensor is faulty. An error code may be sent to the PCM and a check engine light may come on the dashboard as well if the sensor is bad.

The engine oil pressure warning light will come on if the engine oil pressure is low, or if the oil pressure sensor is faulty. In either case, engine power may be reduced significantly. The check engine light may also illuminate, and an on-board diagnostic (OBD) trouble code will be stored in the vehicle's computer.

What are the steps to diagnose the oil leak in a 2013 BMW 750Li?

To effectively diagnose an oil leak in your 2013 BMW 750Li, start by thoroughly cleaning the engine compartment to remove any old oil residue, which can obscure the source of the leak. Once the area is clean, conduct a meticulous inspection of various components, focusing on the oil reservoir located on the right side of the engine near the front, as this is a common leak point. Look for telltale signs of oil, such as drips on the ground, a burning oil smell, or visible leaks around gaskets and seals. Pay special attention to the oil system components, including hoses and gaskets, as these are often culprits in oil leaks. If you find it challenging to pinpoint the source or if the issue seems complex, don’t hesitate to seek help from a certified mechanic who specializes in BMW vehicles. By following this structured diagnostic approach, you can efficiently identify and address the oil leak issue.

What are the common causes of oil leaks in a 2013 BMW 750Li?

When dealing with oil leaks in a 2013 BMW 750Li, it's essential to understand the common culprits that may be at play. One of the primary offenders is the valve cover gasket, which can wear out over time, leading to oil seeping from the seams where it encases the cylinder head. Additionally, the oil filter gasket is another frequent source of leaks, often resulting in oil pooling on the left side of the engine or appearing to originate from the oil pan. As the vehicle ages, the deterioration of various engine gaskets and seals can also contribute to oil escaping, making it crucial to inspect these components regularly. Furthermore, issues with oil system components can lead to leaks, and a failing oil level sensor may exacerbate the problem. By identifying these common issues, DIYers can take proactive steps to inspect and repair their BMW 750Li, ultimately preventing more severe engine damage and ensuring the vehicle runs smoothly.

How urgent is it to address the oil leak in my 2013 BMW 750Li?

Addressing an oil leak in your 2013 BMW 750Li is an urgent matter that should not be overlooked. Oil leaks can significantly compromise engine performance, leading to overheating and potentially catastrophic engine failure if not resolved quickly. The longer you wait, the more likely you are to experience persistently low oil levels, which can result in severe engine damage over time. Identifying the source of the leak is crucial, as it is not always immediately apparent, and delaying repairs can exacerbate the problem, leading to more extensive damage and higher repair costs. To maintain the optimal performance of your vehicle and avoid costly repairs, it is essential to act promptly and address any oil leaks as soon as they are detected.

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